Effective heat transfer: High-quality copper core ensures effective heat transfer to the solder joint. Extended lifespan: Iron and chrome coating prolongs the life of the solder tip. Original Weller solder tips: Weller Original ET solder tips have a long lifespan, reducing overall operating costs. Over time, this solder station could even pay for itself through lower costs for tips and maintenance. High solder quality: Original Weller solder tips, designed for use with the WE1010 solder station, provide temperature stability and a temperature lock function that protects the solder tips, components, and circuit boards, enabling repeatable soldering results. Choosing the right tip size: Select the size and geometry of your original Weller solder tip to ensure it is sufficient to effectively heat the solder joint. Weller ET solder tips are designed for use with WE1010, WE1010EDU, LR21, WES51/50, WESD51. Prevents sensor sticking: The Weller ET series solder tips feature a stainless steel cap in the sensor opening, preventing the precision temperature sensor of the WEP70 soldering iron from sticking.